No, for younger people the state pension being means tested or something is a very valid concern I think. Obviously if you are on a decent wage now then a drop is not what you would want. For context at 57 I am currently happily living on approx 16k a year taken from my savings, that's for a couple with no debt, and not skimping at all.I think for me, I don't really know how much is needed for a decent retirement. If we didn't have a mortgage now, I'd probably want £4K a month net for both of us minimum. (£1.5k bills & food, £2.5K spare) That would be a significant drop to what we are currently earning per month now but I think that should allow a decent standard of living. If you break that into £2K each, that's about a £30K pension each. We'd both need to be sticking in £1K a month which is crazy.
I am also not convinced the state pension will be around when we retire. I think it will be means tested and I don't expect to get a penny. I am factoring that into my calculations, I am more than happy to be proven wrong though!
Once my state pension kicks in I could quite happily take 6k from my private pension a year and carry on regardless, but I'm sure I'll find some toys to spend a bit more on